R1293K Series

Multi power supply IC with Amplifier for LCD

The R1293K Series are multi power supply ICs dedicated for mid-size TFT LCD panels. Each of the IC
consists of a PWM control step-up DC/DC converter, an LDO regulator, a VCOM amplifier and six GAMMA
amplifiers. The output noise can be reduced by SEL pin. (SEL pin "H": normal mode, SEL pin "L": low noise
mode.) The MOSFET for step-up DC/DC converter is built-in and, low power operation is realized by
standby mode. The package is 4mm square QFN(PLP)0404-32.

Step-up DC/DC converter part

Input Voltage Range

2.2V to 5.5V (VIN_DC pin)

Adjustable Output Voltage Range with external resistors

up to 16V

Feedback Voltage

1.0V

Feedback Voltage Accuracy

±1.5%

Adjustable Oscillator Frequency with external resistors for RT pin

300kHz to 1MHz

Adjustable Phase compensation with external components

Internal Soft Start Time

TYP. 10ms

Adjustable Soft Start Time with external capacitors for DTC pin

Oscillator Maximum Duty Cycle

Set with external resistors for DTC
pin
(Limit TYP. 90%)

UVLO detector threshold

TYP. 1.9V

Internal 2A /16V capability Nch MOSFET Driver

TYP. 0.2Ω

Built-in Peak Current Limit Circuit

Short Protection with timer latch function (Adjustable delay time with external capacitors for DELAY pin)